The Secret of My Success...and Other Fallacies

So, I'm at B&N this weekend, and as usual, I become spellbound by all of the collective knowledge that is, literally, at my fingertips as I walk up and down the aisles. I find it absolutely mind-boggling that you can be in a single edifice and hold the keys to the universe if you look closely enough ( I was, coincidentally, in the space-exploration aisle). I suppose the same could be said if you are standing in a library, but there is something about those clear plastic wrappings they put on library books that makes what is contained within seem less accessible. But, as usual, I digress.
So, there I am, walking among the aisles of knowledge and I find myself in the self-help section looking at all the titles: The Success Book, How to Succeed in Business, 7 Secrets of Successful Teens etc. All of these books, all dedicated to the notion of success.
That was when it hit me--how do these books ever sell?
Aren't all individual ideas of what success is dramatically different? And then, it hit me again..."I wonder what are my poppets' definitions of success is? Hmmmmmm...blog question!" And now, here we are.
So, tell me--what is YOUR definition of success? What are the hallmarks, again, to YOU, of a successful person? How do you judge whether or not you are successful? Are there different levels, different measures of importance tied to levels? What do you need to have, to own, to acquire in order to feel successful? What types of things need to happen in order for you to see yourself as a success?
(450 words/60pts)